J. Vansina 
Art History in Africa [PDF ebook] 
An Introduction to Method

This is a pioneering introduction to a subject that is still at an early srage of academic development. It aims to provide the reader with a systematic method for the historical understanding of African art. Professor Vansina considers the medium, technique, style and meaning of art objects and examines the creative process through which they come into being. Numerous photographs and drawings illustrate his arguments, and help to explain the changes that have taken place.